This report supplements data acquired from the National Longitudinal Survey of Youth (NLSY), a continuing survey of 12,600 individuals interviewed annually since 1979, when they were 14 to 22 years of age. Specifically, the report presents data acquired through a 1990 supplemental survey of the female participants' children. A total of 1,116 children between the ages of 10 and 19 responded, 80 percent of whom were born when their mothers were between 16 and 20 years old. The 60-item survey included questions relating to: (1) family interaction; (2) rules and decision-making; (3) school attitudes; (4) non-school activities and time utilization; (5) religion; (6) non-normative behavior; (7) substance use; (8) friendship and dating; (9) sexual activity and sex education; and (10) expectations for the future. The results of the questionnaire are provided in both tabular and narrative form. Two appendixes discuss the sample size and item completion rates and provide a copy of the child self-administered supplement questionnaire. (MDM)